I added a new drive to an existing system and installed F15 on the new drive, and all was well. I copied what I needed from the old drive and removed it from the system. Now it won't boot. It drops to a shell with the message

Code:

ACPI: Expecting a [Reference] package element, found type 0

I don't know if that's relevant, but dmesg reveals that it can't find the root device:

I added a new drive and did a clean install on that drive, leaving everything else alone. This created a new volume group, vg_server100. Then I mounted the home partition from the old volume group, vg_server1, and copied over the data that I needed.

There is a separate boot partiion on the new drive. I can mount it in the recovery shell. I don't know why it fails in the boot process. It appears the kernel is already there. If I could think of a way to reinstall just that part of it, I would give it a try. I did try upgrading from the source media, but that didn't do anything. And I changed grub.conf to show the splash screen and let me try different boot options, but it still won't boot because it claims it can't find the root device.

NO for sure.. I'm just beginning to learn and I see the same problem while rebooting to a new kernel in LVM and from all the people who happen to reply on this thread is offline other than you so I just specifically asked you (if it's offending, I'll make sure I don't do that again)

I'm just running Fedora16 image on VM with kernel version 3.1.0..(something) .. then Downloaded kernel version of 3.1.10 from kernel.org, compiled, installed and rebooted it (with some printk() and dumpstack() in the socket functions)..it worked fine for 2-3 days then it started showing me the following message on reboot -

dracut: Warning: No root device "block:/dev/mapper/vg_fedora-lv_root" found
dracut: Warning: LVM vg_fedora/lv_root not found
dracut: Warning: LVM vg_fedora/lv_swap not found
Dropping to debug shell

Since I didnt do anything other than mentioned above so no idea why it happened.
But I would like to mention..my kernel got updated (i guess through auto-update --> which I want to switch off now?) and I could see a different version 3.3.2...(something) which along with my original kernel happen to work fine. It's just I'm not able to reboot a self compiled kernel version 3.1.10